Books by Martin GardnerClick here for all books by Martin Gardner available for purchase on-line. Penrose Tiles to Trapdoor Ciphers by Martin Gardner listed for sale on Bibliophile Bookbase. Click here for full details and on-line purchase. |
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Books by Martin GardnerClick here for all books by Martin Gardner available for purchase on-line. Penrose Tiles to Trapdoor Ciphers by Martin Gardner listed for sale on Bibliophile Bookbase. Click here for full details and on-line purchase. |